Make Text::updateLayoutTextObject() to handle first-letter pseudo element correctly

third_party/WebKit/Source/core/dom/Text.cpp

Index: third_party/WebKit/Source/core/dom/Text.cpp
diff --git a/third_party/WebKit/Source/core/dom/Text.cpp b/third_party/WebKit/Source/core/dom/Text.cpp
index 637ff97396f7a866e972a884f942e4044dd70406..b592b24ec596f23f3ea67e09c69d10587f9a7ec9 100644
--- a/third_party/WebKit/Source/core/dom/Text.cpp
+++ b/third_party/WebKit/Source/core/dom/Text.cpp
@@ -415,9 +415,9 @@ static bool shouldUpdateLayoutByReattaching(const Text& textNode, LayoutText* te
     if (!textNode.textLayoutObjectIsNeeded(*textLayoutObject->style(), *textLayoutObject->parent()))
         return true;
     if (textLayoutObject->isTextFragment()) {
-        FirstLetterPseudoElement* pseudo = toLayoutTextFragment(textLayoutObject)->firstLetterPseudoElement();
-        if (pseudo && !FirstLetterPseudoElement::firstLetterTextLayoutObject(*pseudo))
-            return true;
+        // Changes of |textNode| may change first letter part, so we should
+        // reattach.
+        return toLayoutTextFragment(textLayoutObject)->firstLetterPseudoElement();
     }
     return false;
 }